Effects of Protein and Amino Acids on Poultry Growth and Bone Elastic Modulus

1995 ◽  
Vol 38 (2) ◽  
pp. 603-607
Author(s):  
S. G. Capps ◽  
R. W. Bottcher ◽  
C. F. Abrams Jr. ◽  
S. E. Scheideler
Keyword(s):  
Amino Acids ◽  
Elastic Modulus ◽  
Bone Elastic Modulus

Fast and accurate specimen-specific simulation of trabecular bone elastic modulus using novel beam–shell finite element models

2011 ◽  
Vol 44 (8) ◽  
pp. 1566-1572 ◽  
Author(s):  
Jef Vanderoost ◽  
Siegfried V.N. Jaecques ◽  
Georges Van der Perre ◽  
Steven Boonen ◽  
Jan D'hooge ◽  
...  
Keyword(s):  
Finite Element ◽  
Elastic Modulus ◽  
Trabecular Bone ◽  
Finite Element Models ◽  
Shell Finite Element ◽  
Bone Elastic Modulus

Spatial variation in mandibular bone elastic modulus and its effect on structural bending stiffness: A test case using the Taï Forest monkeys

2016 ◽  
Vol 162 (3) ◽  
pp. 516-532 ◽  
Author(s):  
Kim N. Le ◽  
Matthew Marsik ◽  
David J. Daegling ◽  
Ana Duque ◽  
William Scott McGraw
Keyword(s):  
Elastic Modulus ◽  
Spatial Variation ◽  
Bending Stiffness ◽  
Test Case ◽  
Mandibular Bone ◽  
Bone Elastic Modulus

Simplifying micro-measures of cortical bone elastic modulus (E)

2012 ◽  
Vol 28 ◽  
pp. e39
Author(s):  
L.V.S. Pabis ◽  
R.G. Lima ◽  
A. Muench ◽  
J.B.C. Meira ◽  
V.E. Arana-Chavez ◽  
...  
Keyword(s):  
Elastic Modulus ◽  
Cortical Bone ◽  
Bone Elastic Modulus

scholarly journals In Vitro‐Induced High Sugar Environments Deteriorate Human Cortical Bone Elastic Modulus and Fracture Toughness

2019 ◽  
Vol 38 (5) ◽  
pp. 972-983 ◽  
Author(s):  
Kelly Merlo ◽  
Jacob Aaronson ◽  
Rachana Vaidya ◽  
Taraneh Rezaee ◽  
Vijaya Chalivendra ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Elastic Modulus ◽  
Cortical Bone ◽  
High Sugar ◽  
Human Cortical Bone ◽  
Bone Elastic Modulus

Relationship between ultrasonic parameters and apparent trabecular bone elastic modulus: A numerical approach

2009 ◽  
Vol 42 (13) ◽  
pp. 2033-2039 ◽  
Author(s):  
G. Haïat ◽  
F. Padilla ◽  
M. Svrcekova ◽  
Y. Chevalier ◽  
D. Pahr ◽  
...  
Keyword(s):  
Elastic Modulus ◽  
Trabecular Bone ◽  
Numerical Approach ◽  
Ultrasonic Parameters ◽  
Bone Elastic Modulus

Homochirality as the Signature of Extra-Terrestrial Life

1997 ◽  
Vol 161 ◽  
pp. 505-510
Author(s):  
Alexandra J. MacDermott ◽  
Laurence D. Barron ◽  
Andrè Brack ◽  
Thomas Buhse ◽  
John R. Cronin ◽  
...  
Keyword(s):  
Amino Acids ◽  
Protein Synthesis ◽  
Optical Rotation ◽  
Physical Origin ◽  
Natural Choice ◽  
Rosetta Mission ◽  
Terrestrial Life ◽  
Subsurface Layers ◽  
Solar System Bodies ◽  
Origin Of Homochirality

AbstractThe most characteristic hallmark of life is its homochirality: all biomolecules are usually of one hand, e.g. on Earth life uses only L-amino acids for protein synthesis and not their D mirror images. We therefore suggest that a search for extra-terrestrial life can be approached as a Search for Extra- Terrestrial Homochirality (SETH). The natural choice for a SETH instrument is optical rotation, and we describe a novel miniaturized space polarimeter, called the SETH Cigar, which could be used to detect optical rotation as the homochiral signature of life on other planets. Moving parts are avoided by replacing the normal rotating polarizer by multiple fixed polarizers at different angles as in the eye of the bee. We believe that homochirality may be found in the subsurface layers on Mars as a relic of extinct life, and on other solar system bodies as a sign of advanced pre-biotic chemistry. We discuss the chiral GC-MS planned for the Roland lander of the Rosetta mission to a comet and conclude with theories of the physical origin of homochirality.

Hydrogen Cyanide Polymers from the Impact of Comet P/Shoemaker-Levy 9 on Jupiter

1997 ◽  
Vol 161 ◽  
pp. 179-187
Author(s):  
Clifford N. Matthews ◽  
Rose A. Pesce-Rodriguez ◽  
Shirley A. Liebman
Keyword(s):  
Amino Acids ◽  
Solar System ◽  
Hydrogen Cyanide ◽  
Nitrogen Heterocycles ◽  
Laboratory Studies ◽  
Heterogeneous Solids ◽  
The Many ◽  
Comet Halley ◽  
The Impact ◽  
By Products

AbstractHydrogen cyanide polymers – heterogeneous solids ranging in color from yellow to orange to brown to black – may be among the organic macromolecules most readily formed within the Solar System. The non-volatile black crust of comet Halley, for example, as well as the extensive orangebrown streaks in the atmosphere of Jupiter, might consist largely of such polymers synthesized from HCN formed by photolysis of methane and ammonia, the color observed depending on the concentration of HCN involved. Laboratory studies of these ubiquitous compounds point to the presence of polyamidine structures synthesized directly from hydrogen cyanide. These would be converted by water to polypeptides which can be further hydrolyzed to α-amino acids. Black polymers and multimers with conjugated ladder structures derived from HCN could also be formed and might well be the source of the many nitrogen heterocycles, adenine included, observed after pyrolysis. The dark brown color arising from the impacts of comet P/Shoemaker-Levy 9 on Jupiter might therefore be mainly caused by the presence of HCN polymers, whether originally present, deposited by the impactor or synthesized directly from HCN. Spectroscopic detection of these predicted macromolecules and their hydrolytic and pyrolytic by-products would strengthen significantly the hypothesis that cyanide polymerization is a preferred pathway for prebiotic and extraterrestrial chemistry.

Methionine-Specific Staining of Collagen

1982 ◽  
Vol 40 ◽  
pp. 294-295
Author(s):  
E.M. Kuhn ◽  
K.D. Marenus ◽  
M. Beer
Keyword(s):  
Amino Acids ◽  
Collagen Fibers ◽  
Type Iii Collagen ◽  
Type I ◽  
Electron Microscopic ◽  
Good Correspondence ◽  
Specific Staining ◽  
Type Iii ◽  
Different Types ◽  
Sulfur Containing

Fibers composed of different types of collagen cannot be differentiated by conventional electron microscopic stains. We are developing staining procedures aimed at identifying collagen fibers of different types.Pt(Gly-L-Met)Cl binds specifically to sulfur-containing amino acids. Different collagens have methionine (met) residues at somewhat different positions. A good correspondence has been reported between known met positions and Pt(GLM) bands in rat Type I SLS (collagen aggregates in which molecules lie adjacent to each other in exact register). We have confirmed this relationship in Type III collagen SLS (Fig. 1).

Prevalence of the pit and antipit in the genus Glycine

1987 ◽  
Vol 45 ◽  
pp. 986-987
Author(s):  
R. W. Yaklich ◽  
E. L. Vigil ◽  
W. P. Wergin
Keyword(s):  
Amino Acids ◽  
Endoplasmic Reticulum ◽  
Glycine Max ◽  
Seed Coat ◽  
Cell Types ◽  
Abaxial Surface ◽  
Legume Seed ◽  
Initial Report ◽  
Cone Cells ◽  
Glycine Max L

The legume seed coat is the site of sucrose unloading and the metabolism of imported ureides and synthesis of amino acids for the developing embryo. The cell types directly responsible for these functions in the seed coat are not known. We recently described a convex layer of tissue on the inside surface of the soybean (Glycine max L. Merr.) seed coat that was termed “antipit” because it was in direct opposition to the concave pit on the abaxial surface of the cotyledon. Cone cells of the antipit contained numerous hypertrophied Golgi apparatus and laminated rough endoplasmic reticulum common to actively secreting cells. The initial report by Dzikowski (1936) described the morphology of the pit and antipit in G. max and found these structures in only 68 of the 169 seed accessions examined.

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